EP1730402A1 - Compressor with suction muffler - Google Patents

Compressor with suction muffler

Info

Publication number
EP1730402A1
EP1730402A1 EP05708987A EP05708987A EP1730402A1 EP 1730402 A1 EP1730402 A1 EP 1730402A1 EP 05708987 A EP05708987 A EP 05708987A EP 05708987 A EP05708987 A EP 05708987A EP 1730402 A1 EP1730402 A1 EP 1730402A1
Authority
EP
European Patent Office
Prior art keywords
muffler
suction
compressor
refrigerant
suction muffler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05708987A
Other languages
German (de)
French (fr)
Other versions
EP1730402B1 (en
Inventor
Emre Arcelik Anonim Sirketi Oguz
Burhan Arcelik Anonim Sirketi Erincin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP1730402A1 publication Critical patent/EP1730402A1/en
Application granted granted Critical
Publication of EP1730402B1 publication Critical patent/EP1730402B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes

Definitions

  • This invention relates to a compressor that includes a suction muffler that increases the amount of fluid in the cooling cycle that is transmitted to the cylinder as it minimizes the noise.
  • cooling is realized by a refrigerant, which is circulated in a cycle that is formed by a condenser that transfers heat outside, a capillary tube that decreases the pressure, an evaporator that absorbs heat and a compressor.
  • suction mufflers that transfer the flow fluid, used for cooling, to the cylinder part without being heated and that avoid noise produced by the refrigerant are used.
  • Suction mufflers are generally composed of plastic materials and situated on the cylinder head or between the cylinder head and valve plate. The part of sucked refrigerant that forms the suction manifold passes through the suction muffler that is situated inside the cylinder head and reaches the cylinder section. Noise generated during this process needs to be minimized.
  • the aim of this invention is to realize a compressor that includes a suction muffler which increases the amount of refrigerant that is transmitted to the cylinder per unit time and decreases the pressure drop, and that minimizes the noise arising from refrigerant that passes through it.
  • the compressor designed to fulfil this aim is illustrated in the attached figures, where: [009] Fig 1 is a cross-sectional view of a compressor,
  • FIG. 1 is a cross-sectional view along A- A of a suction muffler
  • FIG. 1 is a back perspective view of a suction muffler
  • FIG. 4 is a front perspective view of a suction muffler
  • Fig 5 is a perspective cross-sectional view along B-B of a suction muffler
  • Fig 6 is a perspective cross-sectional view along B-B of a suction muffler that has two independent flow pipes
  • Fig 7 is a perspective cross-sectional view along B-B of a suction muffler that has two flow pipes, which are laid in each other.
  • Components illustrated in the drawings are numbered individually and listed below. 1. Compressor 2. Cylinder 3. Cylinder head 4. Suction muffler 5. Valve plate 6. Muffler outlet 7. Muffler head 8. Suction inlet 9. Flow pipe 10. Outlet chamber 11. Muffler chamber 12. Passage 13. Damping pipe inlet 14. Damping pipe outlet 15. Damping pipe 16. Housing
  • Compressor (1) comprises a housing (16) in which components forming the compressor are located and protected, a cylinder (2) which is in the housing (16) and which pumps the refrigerant inside it, a cylinder head (3) that is on top of the cylinder (2) and that directs refrigerant that is sucked and pumped, a valve plate (5) on which the cylinder head (3) is placed, a suction muffler (4) that transmits the refrigerant that is circulated and the acoustic energy of which is decreased, to the cylinder (2) without being heated and that prevents noise that may be generated by flow fluid, and that is preferably made of plastic.
  • Suction muffler (4) comprises a muffler head (7) that provides its attachment on cylinder head (3), a muffler outlet (6) that is on muffler head (7) and that transmits refrigerant to the cylinder (2), a suction inlet (8) that provides inlet of flow fluid, a muffler chamber (11) in which acoustic energy is decreased, an outlet chamber (10) which enables decreasing of acoustic energy and located before the muffler outlet (6), one or more than one damping pipe (15) that includes a damping pipe inlet (13) which is located inside the muffler chamber (11), and which enables transferral to the outlet chamber (10), and a damping pipe outlet (14) which opens to the outlet chamber (10), one or more than one flow pipe (9) which forms the entry of suction inlet (8) and which opens to the outlet chamber (10) and a passage (12) which is located on the flow pipe (9) and which is situated right across the damping pipe inlet (13) and which opens to the
  • flow pipe (9) and damping pipe (15) are used together to transmit refrigerant having a low temperature rate from the evaporators of refrigerators, for example, to the cylinder (2) with as little pressure drop as possible.
  • the flow pipe (9),which transmits most of the refrigerant, is situated, as it would be integrated to the surface of suction muffler (4) for facing the housing of the compressor (1) at the same time.
  • passage (12) is situated across the suction inlet (8).
  • a flow pipe (9) that is made of an isolating material, separate from the suction muffler (4), and attached on the suction muffler (4) is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

This invention is relates to a compressor (1) that comprises a suction muffler (4) that includes a flow pipe (9) and which increases the amount of refrigerant that is transmitted to the cylinder per unit time and decreases the pressure drop, and that minimizes the noise arising from refrigerant that passes through it.

Description

Description COMPRESSOR WITH SUCTION MUFFLER
[001] This invention relates to a compressor that includes a suction muffler that increases the amount of fluid in the cooling cycle that is transmitted to the cylinder as it minimizes the noise.
[002] Generally in refrigerators, cooling is realized by a refrigerant, which is circulated in a cycle that is formed by a condenser that transfers heat outside, a capillary tube that decreases the pressure, an evaporator that absorbs heat and a compressor. For the compressors utilized in this cycle, suction mufflers that transfer the flow fluid, used for cooling, to the cylinder part without being heated and that avoid noise produced by the refrigerant are used. Suction mufflers are generally composed of plastic materials and situated on the cylinder head or between the cylinder head and valve plate. The part of sucked refrigerant that forms the suction manifold passes through the suction muffler that is situated inside the cylinder head and reaches the cylinder section. Noise generated during this process needs to be minimized.
[003] It is extremely important for compressor performance to keep the refrigerant that is transmitted from evaporator during the operation of compressor, with minimum increase in temperature and with minimum decrease in pressure when transmitted to the cylinder. Damping of pressure waves due to both the time dependant movement of piston and movements of valve is also performed in suction mufflers.
[004] In the current state of art United States patent, US 6358019, a suction muffler that is formed of an upper part, a lower part and an insert, that provides the refrigerant to be transmitted completely in a straight direction; therefore, that has a pipeline where flow losses are minimized, that has at least two chambers and that has a gap formed between an insert situated inside the lower part that forms the body and side walls of the lower part, that is filled with oil as a result of dissolving and leakage of oil particles mixed in the vapour of refrigerant and that minimizes sound waves in a more effective way with the aid of this thin layer filled with oil, is described.
[005] In the current state of art, International Patent Application, WO 00/52334, a pipe that has a gap, which faces the chamber that it is transmitted through and that looks like culvert and a suction muffler at the suction inlet of which opens to the muffler chamber before the outlet, are described.
[006] In the current state of art United States patent, US 4755108, a suction muffler that transmits refrigerant received from suction inlet to the outlet, that has gaps that open to the chambers that refrigerant is transmitted through, is described.
[007] The aim of this invention is to realize a compressor that includes a suction muffler which increases the amount of refrigerant that is transmitted to the cylinder per unit time and decreases the pressure drop, and that minimizes the noise arising from refrigerant that passes through it. [008] The compressor designed to fulfil this aim is illustrated in the attached figures, where: [009] Fig 1 is a cross-sectional view of a compressor,
[010] Fig 2 is a cross-sectional view along A- A of a suction muffler,
[011] Fig 3 is a back perspective view of a suction muffler,
[012] Fig 4 is a front perspective view of a suction muffler,
[013] Fig 5 is a perspective cross-sectional view along B-B of a suction muffler,
[014] Fig 6 is a perspective cross-sectional view along B-B of a suction muffler that has two independent flow pipes, [015] Fig 7 is a perspective cross-sectional view along B-B of a suction muffler that has two flow pipes, which are laid in each other. [016] Components illustrated in the drawings are numbered individually and listed below. 1. Compressor 2. Cylinder 3. Cylinder head 4. Suction muffler 5. Valve plate 6. Muffler outlet 7. Muffler head 8. Suction inlet 9. Flow pipe 10. Outlet chamber 11. Muffler chamber 12. Passage 13. Damping pipe inlet 14. Damping pipe outlet 15. Damping pipe 16. Housing
[017] For home appliances, preferably refrigerators, circulation of refrigerant that is utilized in order to provide cooling is realized by a compressor (1).
[018] Compressor (1) comprises a housing (16) in which components forming the compressor are located and protected, a cylinder (2) which is in the housing (16) and which pumps the refrigerant inside it, a cylinder head (3) that is on top of the cylinder (2) and that directs refrigerant that is sucked and pumped, a valve plate (5) on which the cylinder head (3) is placed, a suction muffler (4) that transmits the refrigerant that is circulated and the acoustic energy of which is decreased, to the cylinder (2) without being heated and that prevents noise that may be generated by flow fluid, and that is preferably made of plastic.
[019] Suction muffler (4) comprises a muffler head (7) that provides its attachment on cylinder head (3), a muffler outlet (6) that is on muffler head (7) and that transmits refrigerant to the cylinder (2), a suction inlet (8) that provides inlet of flow fluid, a muffler chamber (11) in which acoustic energy is decreased, an outlet chamber (10) which enables decreasing of acoustic energy and located before the muffler outlet (6), one or more than one damping pipe (15) that includes a damping pipe inlet (13) which is located inside the muffler chamber (11), and which enables transferral to the outlet chamber (10), and a damping pipe outlet (14) which opens to the outlet chamber (10), one or more than one flow pipe (9) which forms the entry of suction inlet (8) and which opens to the outlet chamber (10) and a passage (12) which is located on the flow pipe (9) and which is situated right across the damping pipe inlet (13) and which opens to the muffler chamber (11).
[020] In a preferred embodiment of the invention, flow pipe (9) and damping pipe (15) are used together to transmit refrigerant having a low temperature rate from the evaporators of refrigerators, for example, to the cylinder (2) with as little pressure drop as possible. How pipe (9) has a bigger cross-sectional area compared to the damping pipe (15). Therefore, most of the flow sucked by flow pipe (9) from the suction inlet (8) reaches the outlet chamber (10) without encountering any obstacles and by joining with refrigerant that is transmitted from damping pipe (15) in the outlet chamber (10), easily reaches muffler outlet (6). Since flow pipe (9) that transmits the refrigerant connects suction inlet (8) directly to outlet chamber (10), more refrigerant is received inside the cylinder (2). Thus, as the flow pipe (9) provides better flow of refrigerant and increases yield, damping pipe (15) minimizes the noise arising from the flow.
[021] In the embodiment of the invention, heat transfer from the motor is decreased, since the flow pipe (9) is located at the outer surface of suction muffler (4) that is further to the cylinder (2) and closer to the housing (16) in order to transmit refrigerant having a low temperature rate without getting hotter. Therefore, as with the aid of flow pipe (9) most of the refrigerant sucked is transmitted to the outlet chamber (10), and due to the location of flow pipe (9) inside the compressor (1), this high amount of refrigerant is transmitted to the outlet chamber (10) with less heating up.
[022] In the embodiment of the invention, the flow pipe (9),which transmits most of the refrigerant, is situated, as it would be integrated to the surface of suction muffler (4) for facing the housing of the compressor (1) at the same time.
[023] In a further embodiment of the invention, passage (12) is situated across the suction inlet (8).
[024] In another embodiment of the invention, more than one flow pipe (9) that open to the suction inlet (8), that are connected to the outlet chamber (10) independently and that have different or similar forms and cross-sectional areas, are used (Figure 6).
[025] In another embodiment of the invention, more than one flow pipes (9) that are located into each other without affecting the flow, that have similar or different forms and cross-sectional areas, that prevent the increase of sound levels without increasing the pressure drop, are used (Figure 7).
[026] Since the flow pipe (9) that transmits most of the refrigerant is surrounded with a smaller cross-sectional area compared to suction muffler (4), when heat exchange is required to be lowered, additional isolation is achieved without increasing the costs much, just by increasing the thickness of flow pipe (9) walls.
[027] In yet another embodiment of the invention, a flow pipe (9) that is made of an isolating material, separate from the suction muffler (4), and attached on the suction muffler (4) is used.
[028] Volumes in muffler and geometry of damping pipe (15) are designed with different forms and cross-sections, based on the dominant frequencies of the applied compressor (1). Moreover, narrow and wide parts on the flow pipe (9) that transmits the refrigerant based on the resonance frequencies of other components of compressor (1) and compressor (1) housing, are apparent.
[029] In the embodiment of the invention, as noise minimization is accomplished, transmitting more refrigerant to the cylinder (2) is provided, since the flow pipe (9) that transmits most of the refrigerant connects the suction inlet (8) to the outlet chamber (10) without any discontinuity. Therefore, according to the situation where single damping pipe (15) is applied, a significant increase in the flow area and a decrease in the pressure loss is accomplished.

Claims

Claims
[001] A compressor (1) that includes; a cylinder (2) which pumps the refrigerant inside it; a suction muffler (4) that transmits the refrigerant, that is circulated and the acoustic energy of which is decreased, to the cylinder (2) without being heated and further prevents noise to be generated by refrigerant; and is characterized by a suction muffler (4) that comprises; a muffler outlet (6) that transmits refrigerant to the cylinder (2); a suction inlet (8) that provides inlet of refrigerant; a muffler chamber (11) in which acoustic energy is decreased; an outlet chamber (10), which enables decreasing of acoustic energy, located before the muffler outlet (6); one or more than one damping pipe (15) that includes a damping pipe; inlet (13) located inside the muffler chamber (11), and enabling transfer to the outlet chamber (10), and a damping pipe outlet (14) which opens to the outlet chamber (10); one or more than one flow pipe (9) which forms the entry of suction inlet (8) and which opens to the outlet chamber (10); a passage (12) which is located on the flow pipe (9) and which opens to the muffler chamber (11).
[002] A compressor (1) as described in Claim 1, characterized by the suction muffler (4) that comprises; a passage (12) which is situated across suction inlet (8) and which opens to the muffler chamber (11) as it would be located across damping pipe inlet (13).
[003] A compressor (1) as described in Claims 1 or 2, characterized by the suction muffler (4) that comprises; a flow pipe (9) that transmits most of the flow sucked from the suction inlet (8) to the outlet chamber (10) without encountering any obstacles in order to transmit refrigerant to the cylinder (2) with as little pressure loss as possible and with a bigger cross-sectional area compared to the damping pipe (15).
[004] A compressor (1) as described in any of the above mentioned Claims, characterized by the suction muffler (4) that comprises; a flow pipe (9) located at the outer surface of suction muffler (4) that is further away from the cylinder (2) and closer to the housing (16) that decreases heat transfer from the motor, and that transmits the refrigerant with low heating rates to the outlet chamber (10) and cylinder (2).
[005] A compressor (1) as described in any of the above mentioned Claims, characterized by the suction muffler (4) that comprises; more than one flow pipes (9) that open to the suction inlet (8), those are connected to the outlet chamber (10) independently and that have similar or different forms and cross-sectional areas. [006] A compressor (1) as described in any of the above mentioned Claims 1 to 4, characterized by the suction muffler (4) that comprises; more than one flow pipes (9) that are located in each other without affecting the flow, that have similar or different forms and cross-sectional areas that prevent the increase of sound levels without increasing the pressure drop.
[007] A compressor (1) as described in any of the above mentioned Claims, characterized by the suction muffler (4) that comprises; a flow pipe (9) where additional isolation is achieved by increasing the thickness of its borders.
[008] A compressor (1) as described in any of the above mentioned Claims, characterized by the suction muffler (4) that comprises; a flow pipe (9) that is separately manufactured with isolation material and that is integrated on suction muffler (4).
EP05708987A 2004-03-12 2005-03-11 Compressor with suction muffler Expired - Lifetime EP1730402B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400484 2004-03-12
PCT/IB2005/050873 WO2005088126A1 (en) 2004-03-12 2005-03-11 Compressor with suction muffler

Publications (2)

Publication Number Publication Date
EP1730402A1 true EP1730402A1 (en) 2006-12-13
EP1730402B1 EP1730402B1 (en) 2008-04-30

Family

ID=34961250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05708987A Expired - Lifetime EP1730402B1 (en) 2004-03-12 2005-03-11 Compressor with suction muffler

Country Status (7)

Country Link
EP (1) EP1730402B1 (en)
AT (1) ATE393879T1 (en)
DE (1) DE602005006399T2 (en)
DK (1) DK1730402T3 (en)
ES (1) ES2304007T3 (en)
TR (1) TR200604893T1 (en)
WO (1) WO2005088126A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD589533S1 (en) 2007-08-07 2009-03-31 Jw Pet Company, Inc. Air pump housing
BR202013024030Y1 (en) * 2013-09-19 2019-10-01 Embraco Indústria De Compressores E Soluções E Refrigeração Ltda. CONSTRUCTIVE ARRANGEMENT INTRODUCED IN HERMETIC COMPRESSOR ACOUSTIC FILTER
CN104564609A (en) * 2015-01-05 2015-04-29 安徽美芝制冷设备有限公司 Piston type compressor and air-suction silencer thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8602173A (en) * 1986-05-02 1987-12-22 Brasil Compressores Sa IMPROVEMENT IN A HERMETIC COOLING COMPRESSOR SUCTION SYSTEM
CN1120299C (en) * 1999-02-26 2003-09-03 恩布拉科欧州有限公司 Silencer for sealed refrigerant compressor
DE19923734C2 (en) * 1999-05-22 2001-03-29 Danfoss Compressors Gmbh Suction silencer for a hermetically sealed compressor
KR100378803B1 (en) * 2000-06-12 2003-04-07 엘지전자 주식회사 Muffler for compressor
DE10128225C1 (en) * 2001-06-11 2002-12-05 Danfoss Compressors Gmbh suction silencer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005088126A1 *

Also Published As

Publication number Publication date
ATE393879T1 (en) 2008-05-15
DK1730402T3 (en) 2008-07-21
EP1730402B1 (en) 2008-04-30
TR200604893T1 (en) 2007-01-22
DE602005006399D1 (en) 2008-06-12
DE602005006399T2 (en) 2009-06-18
WO2005088126A1 (en) 2005-09-22
ES2304007T3 (en) 2008-09-01

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